Pull rod clamp



Sept. 8, 1931. M ARCHER 1,822,642

PULL ROD CLAMP Filed Dec. 3, 1950 JEEP @Qlr H Patented Sept. 8, 1931UNITED STATES PATENT OFFICE MERTON T. ARCHER, OF PITTSBURGH,PENNSYLVANIA, ASSIGNOR TO THE NATIONAL SUPPLY COMPANY, OF TOLEDO, OHIO,A CORPORATION OF OHIO PULL non CLAMP Application filed December 3, 1930.Serial No. 499,699.

My invention relates to pull rod. clamps. The object of this inventionis to provide a pull rod clamp for use in the opera-ting connectionbetween a pumping jack and a power transmitting device, such as apumping power, the clamp not being reversible for the substitutiontherein of a pull rod with an emergency head in place of one with aregular upset head or end. In case a regular upset rod should break infield service, the field operators who have usually only crude repairapparatus could head the end of the rod and replace it in the clampWithout reversing the clamp end for end as is required with some typesof clamps. It is the object of this invention to provide for a pull rodtandem seats in a central longitudinal open in g in the clamp, theregular upset head being seated in one seat while the emergency 01'other head is seated in or on the other seat.

Referring to the accompanying drawings, Fig. 1 is a plan view of a pullrod clamp containing my invention, the pull rod 13 being broken ofl;Fig. 2, a plan view of the lower clamp member with the rod 13 and theleg 16 of the stirrup broken off; Fig. 3, a view similar to Fig. 2, butshowing the head 22 of the rod 13 in the seat 23 instead of in the seat24; and Fig. 4, a section on the line 44 011 Fig. 2.

Referring to the accompanying drawings, 10 and 11 are duplicate clampmembers positioned one upon the other and secured together by the bolts12. The opposing faces of the members have duplicate sets of grooves andseats for the heads on the ends of the pull rod 13 and the stirrup 14.Each member has near its edges longitudinal grooves 15 which receive theouter portion of the legs 16 of the stirrup 14. The ends of these legsterminate in heads 17 seated in opposing sockets or recesses 18. Thegrooves 15 enter at one end of each -member and terminate at therecesses 18 so that the clamp cannot be reversed end for end to permitthe legs to project from either end of the clamp at the will of theoperator.

The opposing faces of the members have centrally between the grooves 15and parallel therewith, the registering grooves 19 to receive the pullrod 13 and its head 20, the latter being positioned in the registeringrecesses 21 at the center of the members. This head is shown to be theregular or ordinary head upset or regularly formed at the factory whereit is made. In case the rod 13 fails in service, the service men in thefield could provide the rod with another head such as is shown at 22seated against the edge of the clamp or in the seat 23, this edge orseat being obviously that opposite the edge from which the rod 13projects for connection to the service line, not shown. The clamp isdesigned always to have the head 20 at its center or to have the head 22at the end of the clamp where thestirrup 14 is. 24 are holes for thebolts 12.

It is intended that the pull rod shall have its head in the recess 20normally and in the recess 23 only temporarily until a new pull rod canbe supplied or the damaged one can be properly repaired. It is advisableto have the heads 20 and 22 concealed within the clamp to avoidaccidents to attendants and to prevent the rods from pulling out of theclamp.

I claim 1. In a pull rod clamp, a pair of clamp members havinglongitudinally and centrally an opening, the opening having a seat between its ends to receive a head on a pull rod, and another seat for ahead differing from the first head.

2. In a pull rod clamp, a pair of clamp members having longitudinallyand centrally an openin entirely therethrough, the opening having a seatbetween its ends to receive a head on a pull rod, and another seat for ahead differing from the first head.

3. In a pull. rod clamp, a pair of clamp members having longitudinallyand centrally an opening entirely therethrough, the opening having aseat between its ends to receive a head on av pull rod, and the edge ofthe clamp at one end of the opening serving as a seat for a headdiffering from the first head.

4. In a pull rod clamp, a pair of clamp members having longitudinallyand centrally an opening, the opening having tandem seats for pull rodheads having dlfl'erent characteristics.

5. In a pull rod clamp, a pair of clamp 5 members having in its opposingfaces recesses to receive the headed ends of a U-shaped stirrup andhaving also in said faces opposing recesses having tandem seats toreceive selectively one or the other of different kinds of heads.

6. In a pull rod clamp, clamp members having in their opposing faces andnear the opposite edges registering grooves terminating in registeringrecesses and having in their opposing faces registering grooves parallelwith. the first grooves and lying between the same and havingregistering recesses between their ends, in combination with a U-shapedstirrup having its terminals headed and seated in the first recess andits adjacent portions in the first rooves, and a pull rod seated in theseconc grooves and liming a head seated in the second recesses, the endsof the clamp nearest the stirrup forming a rest for a head on the pullrod.

In testimony whereof, I hereunto affix my signature.

MERTON T. ARCHER.

